<link href="{{$asset_url}}/vendor/photoswipe/photoswipe.css" rel="stylesheet" type="text/css" />
<link href="{{$asset_url}}/vendor/photoswipe/default-skin/default-skin.css" rel="stylesheet" type="text/css" />
<script src="{{$asset_url}}/vendor/photoswipe/photoswipe.min.js"></script>
<script src="{{$asset_url}}/vendor/photoswipe/photoswipe-ui-default.min.js"></script>

<div class="panel">

	<div class="m-xs m-l-none panel-heading text-center">
        <h3 class="m-xs m-l-none">
            {{$promotion->number}}
        </h3>
        <small class="text-muted">
            客户: {{$promotion->customer->user->nickname}}
			&nbsp; 
			创建时间: @datetime($promotion['created_at'])
			&nbsp; 
			照片数量: {{count($images)}}
		</small>
    </div>

	<div class="padder">
        <div class="row">
			<div class="promotion-gallery">
            @if($images)
            @foreach($images as $i => $row)
            <div class="col-sm-4 col-md-3">
                <div class="thumbnail">
                    <a data-size="{{$row['width']}}x{{$row['height']}}" data-med="{{$upload_url}}/{{$row['path']}}" data-med-size="{{$row['width']}}x{{$row['height']}}" href="{{$upload_url}}/{{$row['path']}}">
						<img src="{{$upload_url}}/{{$row['path']}}" style="height:220px;display:block;">
					</a>
                    <div class="caption text-center">
                        <h5>&nbsp;{{$row['promotion']['location']}}</h5>
                        <p class="text-muted">{{$row['promotion']['name']}}</p>
                    </div>
                </div>
            </div>
            @endforeach
            @endif
			</div>
        </div>
    </div>

	<div class="panel-footer">
		<button type="button" onclick="history.back();" class="btn btn-default">返回</button>
	</div>

</div>

<div id="gallery" class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
	<div class="pswp__bg"></div>

	<div class="pswp__scroll-wrap">

		<div class="pswp__container">
		<div class="pswp__item"></div>
		<div class="pswp__item"></div>
		<div class="pswp__item"></div>
		</div>

		<div class="pswp__ui pswp__ui--hidden">

		<div class="pswp__top-bar">

			<div class="pswp__counter"></div>

			<button class="pswp__button pswp__button--close" title="Close (Esc)"></button>

			<button class="pswp__button pswp__button--share" title="Share"></button>

			<button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>

			<button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>

			<div class="pswp__preloader">
				<div class="pswp__preloader__icn">
					<div class="pswp__preloader__cut">
					<div class="pswp__preloader__donut"></div>
					</div>
				</div>
			</div>
		</div>


		<!-- <div class="pswp__loading-indicator"><div class="pswp__loading-indicator__line"></div></div> -->

		<div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
			<div class="pswp__share-tooltip">
				<!-- <a href="#" class="pswp__share--facebook"></a>
				<a href="#" class="pswp__share--twitter"></a>
				<a href="#" class="pswp__share--pinterest"></a>
				<a href="#" download class="pswp__share--download"></a> -->
			</div>
		</div>

		<button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)"></button>
		<button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)"></button>
		<div class="pswp__caption">
			<div class="pswp__caption__center">
			</div>
		</div>
		</div>

	</div>

<script type="text/javascript">
(function() {
	var initPhotoSwipeFromDOM = function(gallerySelector) {

		var parseThumbnailElements = function(el) {

			var thumbElements = el.getElementsByTagName('a');

			var //thumbElements = el.childNodes,
				numNodes = thumbElements.length,
				items = [],
				el,
				childElements,
				thumbnailEl,
				size,
				item;

			for(var i = 0; i < numNodes; i++) {
				el = thumbElements[i];

				// include only element nodes 
				if(el.nodeType !== 1) {
					continue;
				}

				childElements = el.children;

				var caption = childElements[0].parentNode.parentNode.getElementsByClassName('caption')[0];

				size = el.getAttribute('data-size').split('x');

				// create slide object
				item = {
					src: el.getAttribute('href'),
					w: parseInt(size[0], 10),
					h: parseInt(size[1], 10),
					author: el.getAttribute('data-author')
				};

				item.el = el; // save link to element for getThumbBoundsFn

				if(childElements.length > 0) {
					item.msrc = childElements[0].getAttribute('src'); // thumbnail url
					//if(childElements.length > 1) {
					//item.title = childElements[1].innerHTML; // caption (contents of figure)
					//}
					item.title = caption.getElementsByTagName('p')[0].innerText + '[' + caption.getElementsByTagName('h5')[0].innerText + ']';
					
				}

				var mediumSrc = el.getAttribute('data-med');
				if(mediumSrc) {
					size = el.getAttribute('data-med-size').split('x');
					// "medium-sized" image
					item.m = {
						src: mediumSrc,
						w: parseInt(size[0], 10),
						h: parseInt(size[1], 10)
					};
				}
				// original image
				item.o = {
					src: item.src,
					w: item.w,
					h: item.h
				};

				items.push(item);
			}

			return items;
		};

		// find nearest parent element
		var closest = function closest(el, fn) {
			return el && ( fn(el) ? el : closest(el.parentNode, fn) );
		};

		var onThumbnailsClick = function(e) {
			e = e || window.event;
			e.preventDefault ? e.preventDefault() : e.returnValue = false;

			var eTarget = e.target || e.srcElement;

			var clickedListItem = closest(eTarget, function(el) {
				return el.tagName === 'A';
			});

			clickedListItem = e.target.parentNode;

			if(!clickedListItem) {
				return;
			}

			var clickedGallery = clickedListItem.parentNode.parentNode.parentNode;
			var childNodes = clickedGallery.getElementsByTagName('a');

			var numChildNodes = childNodes.length,
				nodeIndex = 0,
				index;

			for (var i = 0; i < numChildNodes; i++) {
				if(childNodes[i].nodeType !== 1) { 
					continue; 
				}

				if(childNodes[i] === clickedListItem) {
					index = nodeIndex;
					break;
				}
				nodeIndex++;
			}

			if(index >= 0) {
				openPhotoSwipe(index, clickedGallery);
			}
			return false;
		};

		var photoswipeParseHash = function() {
			var hash = window.location.hash.substring(1),
			params = {};

			if(hash.length < 5) { // pid=1
				return params;
			}

			var vars = hash.split('&');
			for (var i = 0; i < vars.length; i++) {
				if(!vars[i]) {
					continue;
				}
				var pair = vars[i].split('=');  
				if(pair.length < 2) {
					continue;
				}           
				params[pair[0]] = pair[1];
			}

			if(params.gid) {
				params.gid = parseInt(params.gid, 10);
			}

			return params;
		};

		var openPhotoSwipe = function(index, galleryElement, disableAnimation, fromURL) {
			var pswpElement = document.querySelectorAll('.pswp')[0],
				gallery,
				options,
				items;

			items = parseThumbnailElements(galleryElement);

			// define options (if needed)
			options = {

				galleryUID: galleryElement.getAttribute('data-pswp-uid'),

				getThumbBoundsFn: function(index) {
					// See Options->getThumbBoundsFn section of docs for more info
					//var thumbnail = galleryElement.getElementsByTagName('a')[index].children[0];
					var thumbnail = items[index].el.children[0],
						pageYScroll = window.pageYOffset || document.documentElement.scrollTop,
						rect = thumbnail.getBoundingClientRect(); 

					return {x:rect.left, y:rect.top + pageYScroll, w:rect.width};
				},

				addCaptionHTMLFn: function(item, captionEl, isFake) {
					if(!item.title) {
						captionEl.children[0].innerText = '';
						return false;
					}
					captionEl.children[0].innerHTML = item.title;
					//captionEl.children[0].innerHTML = item.title +  '<br/><small>Photo: ' + item.author + '</small>';
					return true;
				},
				
			};


			if(fromURL) {
				if(options.galleryPIDs) {
					// parse real index when custom PIDs are used 
					// http://photoswipe.com/documentation/faq.html#custom-pid-in-url
					for(var j = 0; j < items.length; j++) {
						if(items[j].pid == index) {
							options.index = j;
							break;
						}
					}
				} else {
					options.index = parseInt(index, 10) - 1;
				}
			} else {
				options.index = parseInt(index, 10);
			}

			// exit if index not found
			if( isNaN(options.index) ) {
				return;
			}

			var radios = document.getElementsByName('gallery-style');
			for (var i = 0, length = radios.length; i < length; i++) {
				if (radios[i].checked) {
					if(radios[i].id == 'radio-all-controls') {

					} else if(radios[i].id == 'radio-minimal-black') {
						options.mainClass = 'pswp--minimal--dark';
						options.barsSize = {top:0,bottom:0};
						options.captionEl = false;
						options.fullscreenEl = false;
						options.shareEl = false;
						options.bgOpacity = 0.85;
						options.tapToClose = true;
						options.tapToToggleControls = false;
					}
					break;
				}
			}

			if(disableAnimation) {
				options.showAnimationDuration = 0;
			}

			// Pass data to PhotoSwipe and initialize it
			gallery = new PhotoSwipe( pswpElement, PhotoSwipeUI_Default, items, options);

			// see: http://photoswipe.com/documentation/responsive-images.html
			var realViewportWidth,
				useLargeImages = false,
				firstResize = true,
				imageSrcWillChange;

			gallery.listen('beforeResize', function() {

				var dpiRatio = window.devicePixelRatio ? window.devicePixelRatio : 1;
				dpiRatio = Math.min(dpiRatio, 2.5);
				realViewportWidth = gallery.viewportSize.x * dpiRatio;

				if(realViewportWidth >= 1200 || (!gallery.likelyTouchDevice && realViewportWidth > 800) || screen.width > 1200 ) {
					if(!useLargeImages) {
						useLargeImages = true;
						imageSrcWillChange = true;
					}
					
				} else {
					if(useLargeImages) {
						useLargeImages = false;
						imageSrcWillChange = true;
					}
				}

				if(imageSrcWillChange && !firstResize) {
					gallery.invalidateCurrItems();
				}

				if(firstResize) {
					firstResize = false;
				}

				imageSrcWillChange = false;

			});

			gallery.listen('gettingData', function(index, item) {
				if( useLargeImages ) {
					item.src = item.o.src;
					item.w = item.o.w;
					item.h = item.o.h;
				} else {
					item.src = item.m.src;
					item.w = item.m.w;
					item.h = item.m.h;
				}
			});

			gallery.init();
		};

		// select all gallery elements
		var galleryElements = document.querySelectorAll( gallerySelector );
		for(var i = 0, l = galleryElements.length; i < l; i++) {
			galleryElements[i].setAttribute('data-pswp-uid', i+1);
			galleryElements[i].onclick = onThumbnailsClick;
		}

		// Parse URL and open gallery if it contains #&pid=3&gid=1
		var hashData = photoswipeParseHash();
		if(hashData.pid && hashData.gid) {
			openPhotoSwipe(hashData.pid, galleryElements[hashData.gid - 1], true, true);
		}
	};
	initPhotoSwipeFromDOM('.promotion-gallery');
})();
</script>